Puncture-proof auto-tire



n; w. sKoGsBEnGH.'

PuNcLuRE PROOF Auo TIRE. APPLICATION FILED IAN.2'2, I9l8.

l ,322,636. Patented Nov. 25, 1919. I

INVENTOR WITNESS'ES ATTORNEY WTE@ STATES DAVID W. SKOGSBERGI-I, OFCHICAGO, ILLINOIS.

Specification of Letters Patent.

PUNCTURE-PROOF AUTO-TIRE.

Patented Nov. 25, 1919.

Applicationiled January 22, 1918. Serial No. 213,207.

simple and eliicient lmeans for resilientlyV supporting the treadportions of a metallic tire. a

Another object of this invention is the production of a simple andefficient resilient tire of the pneumatic type, wherein the treadportion thereof is efficiently reinforced in such a manner as to presenta puncture proof tread.

With these and other objects in view Vthis invention consists of certainnovel constructions, combinations and arrangements of parts as will behereinafter fully described and claimed.

In the drawings: f

Figure 1 is a side elevation of a portion of the'tire shown mounted upona wheel rim,

Fig. 2 is a side elevation of a portion of a tire mounted upon a wheelrim,showing the modied form of connecting the tire in engagement withthe spokes,

Fig. 3 is a vertical section taken throug the automobile tirek showingone form thereof, Y

Fig. 4 is a vertical transverse section throiigh a modified form ofVatire,

Fig. 5 1s a transverse vertical section through a still further modifiedformof the tire which may be used in carrying out the present invention.

By referring` to the drawings it will be seen that 1 designates the rimof the wheel which is supported upon the usual spokes 2. The rim carriesa pneumatic tube 3 upon the outer face thereof and this tube 3 isconnected to a suitable air supply valve 1 for the purpose offacilitatingthe entrance of air into the tube 3.V The rim 1 is providedwith Va plurality of side flanges 5, which flanges 5 extend .along thesides Vof the tube 3 for the purpose of rmly holding the tube 3 againstlateral movement upon the rim.

An outer tread plate 6 is slidably mounted upon the rim 1 and this treadplate 6 is substantially U-shaped in cross section as' shown clearly inFig. 3 of the drawing. The tread plate 6 is slidably mounted upon therim 1 and is adapted to move thereon for the purpose of permitting thetread plate 6 to move under the yieldable action of the inner tube 3,the inner tube 3 engaging the inner face of the tread plate 6 as clearlyshown in Fig. 3.of the drawings. This tread plate 6 is provided with anouter covering retaining rib 7 upon the outer face thereof, and this rib7 is provided with a pluralityv of laterally eX- tending flanges 8 uponthe side edges thereof for the purpose of permitting the outer covering9 to fit snugly tlierearound. By having the covering 9 fitting snuglyaround the edges of the rib 7, it will be seen that the covering 9 willbe firmly held in engagement with the tread plate 6. This tread plate 6is also provided with a plurality of eye retaining plates 10 as shown inFig. 3 and these retaining plates 1() are provided with outwardly spacedlower flanges 11, which flanges 11 are embedded within the outercovering 9 for the purpose of facilitating the holding of the outercovering 9 in engagement with the tread plate 6.

Theouter cover 9 carries a pair of securing bands 12 upon the side edgesthereof,

and 4these bands 12 are secured to the side plates of the tread plates 6by means of suitable securing screws 13. VIn this way, the inner ends ofthe covering 9 may be firmly held in engagement with the inner ends ofthe .tread plate 6. This structure will be clearly understood bycarefully considering Fig. 3 of the drawings.

It of course should be understood that the metallic portions of the tiremay be either formed of pressed steel or may be formed of sheet metal',or in fact may be formed of any suitable or desired material withoutdeparting from the spirit of the invention.

In the structure shown in Fig. 4 of the drawings, a rim 14; isprovidedwhich rim 1li is surroundedby means of la rim plate 15, the rimplate 15 having outwardly extending flanges 16. An outer metallic treadsection 17, which is substantiallyv U-shaped in cross section fitsover-the side llang'esr16 and extends outwardly with respect theretofor' the purpose of producing theV pocket 18 Y within which pocket 18 ismounted the pneumatic inner tube 19. This inner tube may be connectedwith a suitable valve for the purpose of permitting air to be insertedinto the tube 19. The outer tread section 18 is provided Vwith asubstantially concaved ence of the tire tread section 17. These blocksor bands 23 are securely held in engagement with the tread'section 17 bymeans of suitable screws 24 shown in Fig. 4 of the drawings.

In Fig. 5' there is shown a still further embodiment of the presentinvention orv modified form thereof, wherein theentire metallic portionthereof is formed of'sheet metal. Itrof course should be understood thatwhen the device is'formed of sheet metal, a-very light and cheaplyconstructed device has been produced. In the structure shown in Fig. 5illustrating the pressed steel tire construction, it should beunderstood that lthe entire device, that is to say the metal partsthereof are preferably formed from steel which is pressed into thedesired shape. v Y

In the form shown in Fig. 5 a rim 25 is employed and an outer`treadsection26 is slidably ymounted upon thev rim 25. This tread section 26is preferably struck from sheet steel and comprises a circumferentiallyextending rib 27 formed upon the outer -Q tread portion thereof, the rib27 being provided with laterally folded rib or flange portions 28. Theside edges of the tread section 26 are bent or folded to produce aclencher liange 29 and an overhan'ging re- -f taining flange 30extending around each side edge of the tread section 26. These clencheranges 29 and overhanging flanges 30 are adapted to constitute, inconjunction with the flanges or folded portions 28, an efficient 'if'retainingA means for the yieldable tread portions 31, which issupported' upon the outer end of the tread section 26. The treadAsection`26 is provided upon the inner side Vedges thereof with a socketportion 32 f7 which is formed by pressing a substantially U-shapedchannel near the edge of the tread section 26 and a suitable retainingblock or band 33 is mounted within this channel 32. rlhe band 33 isfirmly held in engagement i' with the tread section 26 by means of suitable screws v34. AThese screws 34 also pass through the inner retainingplate or guiding plate 35 which comprises a portion of the ytreadsection 26,`the inner retaining plate 25 extending entirelyacross the'under face of the tread portion of the tread section 26.

Y A suitableV pneumatic tube 36 is carried by the rib 25 and isinterposed between the rib 25 and the inner face of the inner plate 35Of the; tread section 26. A plurality Y of anchoring yokes or straps 37may be secured to the bands 12, 23 or 33 and these yoles plates orstraps 37y arei adapted 'to be crossed as shown 'in Fig. 1 and straddlearound the spokes 2, in this way firmly holding the bands which are,carried by'the tread sectionof the tire against circumferentialmovement, upon the rim which sup` ports the same. l

In Figy2'there is shown a modified form *l Y Y of the device foranchoring the band against longitudinal or circumferential movement,

and this anchoring means comprises a slotted Y plate 38, the slottedplate receivinga guiding pin 39 carried by the spoke 2.V This.'

plate 38 is secured to one of the bands for the purpose of anchoringtheband against circumferentialeinovement. l

From the foregoing description it will be seen that a very simple andeiiicient yieldable or resilient tire has been produced which will bepuncture proof due to the fact that the inner tube mounted within thetread sec tion of the tire will be efficiently protected and reinforcedby means of Vthe metallic plate extending across the tread or outerportion thereof. lt. of course should be understood thatl certainobvious'detail mef chanical changes may be made in thepresent devicewithout departing from the spiritiof fifi invention, so long as thesechanges Vfall within the scope of the appended'claim. What is claimedis: 1 A. ytire comprising a tread section, aV rim section, said treadsection beingl mounted upon said rim section, said tread sectioncomprising an inner substantially U-shaped sheet metal wall in crosssection, an outer wall having the sides thereof struck'on the arc of acircle and provided with means jf;

along the inner edges thereof for` facilitating the securing of saidtread section against accidental displacement from the rim section, theouter wall of said tread section having the outer ends thereofprojecting beyond the outer ends of the inner wall and formed to producea pocket, the outer porev tion of the outer wall intermediate thesidesthereof resting flatl upon the outer portion' of the inner wall, saidpocket adapted to receive a tread cushion and means for yieldablysupporting the tread section. upon'the rim section.

In testimony whereof I'ailix my signature in presence of two witnesses.l

Davin w. sxoss'BERsi-i.

Witnesseszf l/VILLIAM: F. RITTER, ORviL NELsoN.- Y

